Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc dan » thuc hanh, hoc dan
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
dang xa » dang xay, dang ha, dang va
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
vi cua » vai cua, di cua
ve am » va am

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky ((dang xa) OR (lang xa)) hoi. hieu ve am ((thuc dan) or (thuc vat)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((dang xa) OR (lang xa)) hoi. hieu ve am ((thuc dan) OR (thuc vat)) hanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky ((dang xa) OR (lang xa)) hoi. hieu ve am ((thuc dan) or (thuc vat)) hanh vi cua triet*".